Abstract
The swelling equilibrium behaviour of N-n-butyl-N,N-dimethyl-4-vinyl benzylammonium bromide (BBABr) gel was measured in aqueous solutions of various inorganic electrolytes: HBr, LiBr, NaBr, KBr, NH4Br, NaCl, NaI and NaClO4. The equilibrium swelling volume of BBABr gel does not depend strongly on the cationic species but on the anionic species. In aqueous solutions containing I- and ClO-4 ions, the volume-phase transitions of the BBABr gel were induced by a change in the concentration of the electrolytes. It was verified experimentally with 79Br n.m.r. and an ion electrode that the volume-phase transition is controlled by the change in the association state of the charged groups in the gel.
Original language | English |
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Pages (from-to) | 5040-5043 |
Number of pages | 4 |
Journal | Polymer |
Volume | 33 |
Issue number | 23 |
DOIs | |
Publication status | Published - 1992 |
Keywords
- N-n-butyl-N,N-dimethyl-4-vinylbenzylammonium bromide gel
- electrolyte aqueous solution
- ionic association
- polyelectrolyte gel
- volume-phase transition
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry